Formula to get the first cell with a numerical value from a selection?

Question

In Microsoft Excel 2013:

I have a spreadsheet (exported monthly from another program). My goal is to take the last row of data and subtract it from the first row of data

Answer 1

You can simplify the last number formula by using LOOKUP, i.e.

=LOOKUP(9.99999999999999E+307,B:B)

and for the first number try this

=INDEX(B:B,MATCH(1,INDEX(ISNUMBER(B:B)+0,0),0))